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Finding the Fourth Proportional to 104,820.74, 144,655.71 and 57,076.10

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Solution

The fourth proportional to 104,820.74, 144,655.71 and 57,076.10 is: 78,766.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,820.74 : 144,655.71 = 57,076.10 : x
  2. Step 2: Convert to fraction form
    104,820.74/144,655.71 = 57,076.10/x
  3. Step 3: Cross multiply
    104,820.74x = 144,655.71 × 57,076.10
  4. Step 4: Simplify right side
    104,820.74x = 8,256,383,769.53
  5. Step 5: Solve for x
    x = 8,256,383,769.53/104,820.74
  6. Step 6: Final answer
    x = 78,766.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.